The distance between X and Y is 450km.Find the speed of P

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The distance between X and Y is 450km.Find the speed of P

Gayathri

Two trains P and Q Started from X and Y resp. P travelled towards Y and Q travelled towards X.They crossed each other after 5 hours.Then P took 135 min less to reach Y than Q reached to X.The distance between X and Y is 450km.Find the speed of P?